Description
At present, the plate heat exchanger produced by our company are mainly BR type, BRB type (BRB type or BB type).
Type BR is characterized by, heat exchanger plate and the sealing pad is the same, plate four channel hole of the same size, the same medium at the two passage hole side of import, as shown in Figure four, can not form a diagonal flow form, the assembly of adjacent heat exchange plates turned 180 degrees, so that the word type in the opposite direction. The assembly after the two flow channel cross-sectional flow area in the same.
Type BRB is characterized by, using two kinds of heat exchanger plate and rubber pad different (commonly known as the A A pad and B board B pad). Plate diagonal direction is two big channel hole, the other diagonal direction is two small holes in the channel, the same medium diagonal flow out hole, not import on the same side of flow passage holes, as shown in figure five. The two sheet corrugated cross-section shape is different, the assembly of two plate alternately stacked, assembly, because the two sheet corrugated section of arc opposite each other, sheet corrugated cavity corresponding to the big channel pore formation channel section large; plate corrugation cavity and corresponding small channel hole form a channel section small, this is the origin of BRB unequal channel section, two section area ratio of roughly 2:1.
When two kinds of medium flow of different and generally is 2:1 and not easy to assemble in the process, can choose the type of heat exchanger. It is suitable for district heating, a general network of hot water flow is small, the two network users heating water flow is larger.